Nutrient trends in streams and rivers of the United States, 1993-2003
By: by Lori A. Sprague ... [et al.].
Contributors: National Water-Quality Assessment Program (U.S.)
Series: Scientific investigations report -- 2008-5202; Scientific investigations report -- 2008-5202.
Publisher: U.S. Geological Survey
Published: 2009
Place of publication: Reston, Va
Language: eng
Number of pages: 196
ISBN-13: 9781411325241
Notes: "National Water-Quality Assessment Program."

Includes bibliographical references (p. 101-104).

Also available via Internet.